Machine for making pipe elbows



I... H. PURNELL MACHINE FOR MAKING PIPE ELBOWS Feb. 9 1923.,

Filed my 26. 1 922 a sheets- -shet l I 17772 72 02;" lerrzzzezj f arnezz i L. @E

Feb. 9 1926.

LJ'HTPURNELL MACHINE FOR MAKING PIPE ELBOWS Filed May 26, I5 Sheets-Sheet z lull VIII- u lllilllllll .JlllLm w. illllllllll V lfijli Feb. 9,1926.

L H. PURNELL MACHINE FOR MAKING PIPE ELBOWS Filed May 26, .1922

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limuez J ZPa/WZ ez Patented Feb. 9, "i926.

UNITED stares PAT EMT QFFICE.

LEIV IUEL H. PURNELL, OF CHICAGO, ILLINOIS, ASSIGNOB ONE-HALF T HENRY G.

GOELITZ AND ONE-HALF T0 ENOCI-I PURNELL, BOTH 0F OAK PARK, ILLINOIS.

MAGHIIIE FOR MAKING PIPE ELBOWS.

Application filed May 26, 1922. Serial No. 563,845.

of Illinois, have invented a new and useful Improvement in h achines for Making Pipe Elbows, of which the followmg 1s a-speclfication;

This invention relates to machines for making pipe elbows and the like, and is fully described in the following specification and shown in the accompanying drawings, in which:

Figure 1 is a side elevation of the machine; Fig. 2 is an end elevation of the same; Fig. 3 is a vertical section on the line 33 of Fig. 1;

Fig. 1 is an enlarged view of the rotary cutters, showing a pipe in operation of being cut;

Fig. 5 is the same showing the rotary cutters pressing close together during the operation of forming the adjacent ends of the 5 newly cut sections;-

Fig. 6 is a side elevation of the pipe with the adjacent ends so formed previous to assembling Fig. 7 is an enlarged view partly in section of the forming rollers, showing the method of assembling the elbow sections;

Fig. 8 is a longitudinal section through the pipe showing the templets assembled therein previous to cutting;

Fig. 9 is an enlarged end view of the same; and

Fig. 10 is a longitudinal section through a completed elbow.

In the embodiment illustrated, the ma chine consists of a cast frame 11 having a base 12 mounted upon any suitable block 13, the ends of the frame being formed into open yokes 1 1 and 15. A shaft 16 is journaled in the frame and supported at its two outer ends by the lower portions of these yokes. This shaft has a beveled gear 17 keyed thereon which meshes with a beveled pinion 18 which is keyed to the shaft 19, the latter being onrnaled in the main frame 11 and having ahand wheel 20 or other suitable turning means keyed thereon. A shaft 21 is journaled in a journal box 22 which is pivotally mounted between pivot points 23 so as to permit the outer end of the shaft which is guided at 2 1 tobe moved up and down by means of the hand wheel 25. A gear 26 is keyed to the inner end of the shaft and meshes with a gear 27 which is keyed on the shaft 16.

The shaft 28 is mounted and driven in the same manner as the shaft 21.

The shafts 21 and 16 are provided with complementary rotary cutters 29 and 30 respectively, which are keyed thereon. The cutter 29 has a disk like cutter 31 which operates in a groove 32 on the cutter 30 as shownin Fig. 4:, so that when a sheet of metal or the like 33 is inserted between the cutters and they are pressed together by the It will be understood that this cutting operation can be performed upon a sheet of material and that it can be begun at the edge of the material and the out carried inwardly, or that it can be begun in the center of the sheet by unsc'rewingthe hand wheel 25, inserting the sheet between the cutters 29 and 30 and screwing cown on the hand wheel 25 until the disk 81 is forced into the groove 32, thereby beginning the cut when it can be continued by turning the shaft 16 by means of the hand wheel 20.

Assuming now that it is desired to form a pipe elbow of the general form shown in Fig; 10 from a-straight piece of pipe, a series of templets 35 and 36 are formed of a size substantially fitting the inner die of the pipe 37, each of which is split along a line running longitudinally of the pipe.

A wire head 39 is soldered or otherwise secured to the adjacent edges of these templets so that the two adjacent wire heads will be spaced apart a definite distance at all points in the circumference of the pipes.

This spaced distance is equal to the distance lVhile I have shown but a single embodibetwe'en the grooves 40 and il-andthelower -ment of my invention, itisto be understood rotary cutter 30. V i that it is capable of many modifications. It will be understood from the foregoing .Changes, therefore, in the construction and that was the shafts 1,6 and21 as shown in arrangement may be nade which do not de- Figze are turnedthe pipe 33 Willbe ropart fro1n tl 1e spirit and scope Qfthe a tate'd with the cutters 29 and 30 and that pended claims in which it is mv intention to these Cutters will "follow;theparallel beads clainrall novelty inherent in the invention 89, thereby cutting out a strip 3%,separating as broadly as 'iossible in view of the prior the section A from thenext adjacent;.sec- .Eart.

tion B. As this cut is almost completed, What I claim as new, and desire to secure the hand wheel t'25'is screwed jdown farther by Letters Patent,-is: i so astoiforce the shoulder t2: into the groove 1. wlilechanismi'or cutting pipecomprising 4.3 untilthetop of the shoulderAQpresses .a templetadapted. to; be secured toss-id pipe. ithe flange 4/4 of thesection -A against the a rotary cutter adapted to cut saidpipeiand bottom of the groove 5L3. HSShQWH in Fig. 5. ,tovbe guidedqbysaid.templeniand means for At thesame-timegthe shonldergl5iistfcrced drivingsaidcutter.

into the groeve dturning up a lateral flange 2. Mechanism for cutting pipe compris- 47.asesliowninnFig. 5. {The other cuts 34, mg a templet adapted to be secured ,ivithin 93:,84Handg34 are then made .and theired-ges said pipe, a rotary. cutterladapted [to cut --flange d onenfteiu the other in thesaine. manisaidpipeand to 'be -guidedbv said, templet,

111(21 as .that previously described] When a nd means for driving-said cutter.

placed-endto' end: they .would then :assume =3. lHQCllfiIllSl-n -f or cut-ting nipe compris- -the:;formshojwnin Figs. 6.With theitemplet ing a templet adapted-to be secured to said istilliin place in each section. .pipe,-1 a pair, cit-complementary rotarveutters 'lhev arethen assembled iinthesame end adapted to cut said pipe and to beguidedw ,ito endielationas; that in which they were bysaid templet.and-means for driving said cutjtromitheqpipeby means ot the :forming qentters.

rollers 48 and 549qvhich,;are keyed upon-tile l. Mechanism for cutting sheet material shafts 28.: nd-l6 respectively. .Thei-roller 49 comprising-a temp-let adapted to be secured lias grocves 50 adapted to receive the beads .to said material said templethavingatrack. 1 39 iofthetemplets and tohold theeadjacent a pair of rotary cutters adapted to ;c.ut.fsaid sections as li and B, so thatthe-lateig'al flange -material, one .of which has ,ia ,groove en- }l? .wiltbe pressed against the bottom of. the said t-raelnwnd neans for driving fiange i h glheeoverliangingportion otthe -ss cutters. A

aflangeletis then pressed down into the, 1908i Mechanism for cutting-nipe compris- ;ti,on-,s 4.ss.sl ioivn.in Fig. Tnbvmeans oi the 'ing a temples-adaptedto be secured tosaid groove 51 intheupper roller 48.,Lnressure pipe-said.- templet having a. traek...a pair of ;;bein ,=a p 1Jli-ed theretoybysineans of the hand rotary cutters adapted to cut saidpipe. one

upon ,the,succeeding sections C,;D and E -,6.il\lechanism ,fOlkCuttiHQJQilDG COlllDIiS- which gare nou' assembled in the same;.gensings; templetjadapteditobe secured tosaid eraL-relationasthat shown in Fig. 6. Each pipe said temnlet; havingatrack...a painof -is then.- 1:otat ed.180 with respect. to theiadrotarv cutters adapted. to cut; sa. idlp ipe,. one jacent section thereby-,bring ing them into not Whichhas,a grooveengaging saidt-naclt. the; position,shown in Fig. 10 and commeans for driving said cutters. :andmeans ..pl-eting theyelboiv. Care ot course must be t'or varying the -.,d istance .hetnfeen said exercised in regulatingQthepressure applied cutters. i

the roller 48 to, permit: the sections. to. be

turned'as described. LEltlUEL H..PU RNELL. 

